{"id":695,"date":"2020-07-01T07:11:23","date_gmt":"2020-07-01T07:11:23","guid":{"rendered":"http:\/\/proserveltd.co.uk\/?post_type=solutions&p=695"},"modified":"2020-08-13T13:15:55","modified_gmt":"2020-08-13T13:15:55","slug":"itt","status":"publish","type":"solutions","link":"https:\/\/proserveltd.co.uk\/solutions\/itt\/","title":{"rendered":"ITT Foundations"},"content":{"rendered":"\t\t
Immersed Tube Tunnels (ITT) are often used in marine tunnel construction to reduce the amount of work undertaken in the water or when other tunnelling methods are not appropriate.\u00a0 These massive caissons are cast in the dry, floated into position, placed on the bed, and connected to the previous segment to create a tunnel.<\/p>
Often, stone bedding layers are used as the foundation, these are inherently variable when constructed underwater, and can be onerous to level, liable to settlement, washout, and scour.\u00a0<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
Compared to stone bedding layers, grout bag foundations are well suited to ITT foundation applications where:<\/p>
Foundation grout bags are specifically developed with the designer and contractor for each project\u2019s particular requirements. Our engineers use a range of variables, not limited to:<\/p>
The formwork and grouting pipes can be prefixed to the concrete element in the casing yard or placed on the bed ahead of ITT element positioning.\u00a0 Once the element is submerged, connected to its neighbour and held on jacks, the grout bags are pump filled. The formwork controls the grout, filling the void between the element and the bed surface in a carefully designed sequence for guaranteed void filling and full contact with controlled uplift pressures.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
Foundation grout bags provide control during construction by:<\/p>
Performance has been demonstrated by 30 years of proven performance on some of the world\u2019s largest marine construction projects.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"featured_media":2929,"parent":0,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"solution_categories":[9],"acf":[],"yoast_head":"\n